A bed/booth you lay/stand in. It has ultraviolet bulbs that emit UV very much similar to the sun. It will give you a tan very much like the sun does. There is a possibility skin cancer can be acquired from using one of these devices.

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Tanning Beds give off mainly ultraviolet radiation, that people use to darken their skin AKA give themselves tans. And most likely Skin Cancer in the future.

A new analysis of about 20 studies concludes the risk of skin cancer jumps by 75 percent when people start using tanning beds before age 30.

Experts also found that all types of ultraviolet radiation caused worrying mutations in mice, proof the radiation is carcinogenic. Previously, only one type of ultraviolet radiation was thought to be lethal.

The new classification means tanning beds and ultraviolet radiation are definite causes of cancer, alongside tobacco, the hepatitis B virus and chimney sweeping, among others.